Pregnant women should avoid all canned tuna, Consumer Reports magazine warned this week, citing potentially high levels of mercury. The Food and Drug Administration, on the other hand, says the average amount of mercury in light tuna is still within acceptable limits. Consumer Reports counters that although average amounts in light tuna may be low, some cans contain much more than average. They say the results of even brief exposure of the fetus to higher levels are still uncertain.

Visit the Consumer Reports Web site for a detailed discussion of their findings, including a list of other seafoods they consider safe or unsafe for pregnant women.

Read the evidence, talk with your healthcare professionals, and make your own decision.